Study selection

Randomised or quasi-randomised controlled trials in any language were selected if they compared an alarm intervention with
an appropriate control group for the treatment of non-organic nocturnal enuresis and systematically measured baseline levels
of bed wetting.

Data extraction

Data were extracted on methods, inclusion criteria, participant characteristics including baseline bedwetting levels, dropouts,
type of intervention, length of follow up, and outcomes. Assessment of trial quality considered allocation concealment, comparability
of groups at baseline, use of a washout period in crossover …